Can 3cx PBX allow video calls seamlessly over IP (without uniform of MCU intermediary) on two video compatible T49G as well as VC room system (for video conferencing)? Because: I want to configure a 3cx pix server in a central location, giving it a public IP address, so i can have about 200 T49Gs yealink phones configured locally (using server local IP) and 300 T49Gs phones configured at the branch office (using the server public IP), also having to yealink VC room system configured each at the two locations (with distance about 3000miles away). Can this work? and is this advisable? please i need kind support on this.